Počet záznamov: 1
skupiny kontrolné
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$a 2003 $8 eng 300 1-
$a Research Design (1973-2002) $8 eng 330 1-
$a Groups that serve as a standard for comparison in experimental studies. They are similar in relevant characteristics to the experimental group but do not receive the experimental intervention. $8 eng 550 $3 sllk_un_auth*d018849 $Y Controlled Clinical Trials as Topic $5 B $a skúšanie klinické kontrolované ako téma 550 $3 sllk_un_auth*d018849 $Y Controlled Clinical Trials as Topic $5 F $a skúšanie klinické kontrolované ako téma 686 $a E05.318.370.074 686 $a E05.581.500.149 750 $a Control Groups $8 eng 801 -0
$a US $b DNLM $c 20020703 801 -2
$a SK $b BA006 $c 20030606 820 $a do not use routinely for the presence of control groups in a study design; reserve for discussions about control groups. $8 eng 980 $x M
Počet záznamov: 1